Description: Horse trails within the federal land boundary
Last Update: 1996
Data Type: Line
Source Data: GPS readings, USGS quads
Source Data Date: gathered in 1996
Source Data Scale: 1:24,000
Source Data Projection: UTM Zone 15
A private individual, volunteering for the U.S. Army Corps of
Engineers in 1996, used a Magellan GPS 4000 global positioning
system unit to plot the location of horse trails at La Farge Project
lands onto 7.5 minute USGS quad maps. The basic procedure was
as follows: start at a known point on the quad map (i.e. road
intersection); activate the GPS unit at this point; proceed along
the trail route and periodically perform a GPS unit function which
compares the previous position to the current position and calculates
the map distance and direction of travel between the points; plot
the information on the quad map; repeat the procedure throughout
the remainder of the trail route. When the mapping was completed,
the trail information was manually digitized from the quad map
into a GRASS GIS.
The horse trails data set was sent from ACOE to LICGF as a GRASS
file in DLG-3 Optional format (Digital Line Graph). At LICGF
the data file was converted into Arc format using the "dlgarc"
command, built as a line coverage, and projected into the Vernon
County coordinate system.
There are no attributes associated with this coverage
ACOE contacts: Randy Urich, Dan Oles (507) 895-6341